100% Local — Your data never leaves your browser

See the real cost
of every AI
conversation.

Track token usage, costs, and context health across Claude and ChatGPT in real time. Works with every AI subscription — from coding to creative work.

Try Free for 14 Days See the hidden cost ↓

Claude & ChatGPT

Real-time tracking

No account needed

Kontinuity

⏸

Today's Total

$0.0047

This Session

$0.0012

Your message 45 tokens

Total sent to API 2,178 tokens

Output tokens 412

▶ Full API breakdown 98% overhead

Project

Landing Page v2 $0.024 total

Claude claude-sonnet-4-20250514

The Hidden Tax

You typed 45 tokens.
The API charged 2,178.

Every message you send carries invisible weight. System prompts, conversation history, tool definitions — they all count toward your bill. Most users never see this breakdown.

Kontinuity shows you exactly where every token goes.

98%

overhead you never see

Your message 45 tokens

System prompt 847 tokens

Conversation history 1,024 tokens

Tool definitions 262 tokens

Total charged 2,178 tokens

86 messages · 99% overhead

→

276 messages · 158,762 charged

Real screenshots from Kontinuity tracking a Claude conversation.

Context Health

Know before your AI forgets.

As conversations grow, your AI's context window fills up. Quality degrades long before you notice. Kontinuity tracks the silent fade in real time.

97%

Healthy

Message 2 1,149 tokens used

86%

Healthy

Message 40 23,009 tokens used

33%

High Usage

Message 206 118,496 tokens used

10%

Critical

Message 276 149,568 tokens used

97% Healthy — Message 2

→

10% Critical — Message 276

Same conversation, same session. Kontinuity tracks the silent fade.

Features

Everything you need to understand your AI costs.

Built for anyone who pays for AI — developers, creators, and professionals who want to know what they're actually spending.

💰

Real-time cost tracking

See your spend update live as you type. Input and output tokens priced separately across Claude and ChatGPT. No guessing, no surprises.

🩺

Context health monitoring

Watch your context window fill in real time. Know exactly when your AI starts forgetting — before it affects your output quality.

🗂️

Project tagging

Tag sessions with project names. See exactly how much each project costs. Perfect for client billing, budgeting, or understanding where your AI spend goes.

🌍

18 currencies

Track costs in your local currency — USD, EUR, GBP, INR, and 14 more. See AI spending in terms that actually make sense to you.

📊

Dashboard & charts

Daily, weekly, and monthly spending charts. Platform breakdown. Usage by project and model. Full CSV and JSON export. All in one clean dashboard.

🔒

100% private, 100% local

All data lives in your browser's IndexedDB. Nothing is sent to any server. We can't see your conversations, costs, or anything else. Ever.

Dashboard

Your complete AI spending dashboard.

Full analytics dashboard with historical data, project breakdowns, model comparisons, and exportable reports.

chrome-extension://kontinuity/dashboard.html

✓

How it works

Open any Claude or ChatGPT conversation — Kontinuity tracks automatically.

◐

Context health

The bar shows how much context window remains.

▤

Projects

Assign conversations to projects to track costs per project.

Today

$0.018

This Week

$0.158

This Month

$0.158

Total Sessions

Total Messages

466

Daily Spending

Feb 18

Mar 1

By Platform

ChatGPT Claude

Daily Token Usage

Usage by Project

Claude lib Kontinuity Space Untagged

Session History

📊 Export Sessions

💬 Export Messages

Date	Platform	Model	Messages	Input	Output	Cost
Mar 8, 07:30 PM	Claude	`claude-sonnet-4-6`	2	21	197	$0.0028
Mar 8, 07:05 PM	Claude	`claude-sonnet-4-6`	2	517	1.4K	$0.016
Mar 7, 09:26 PM	Claude	`claude-sonnet-4-6`	92	876	4.0K	$0.062
Mar 7, 08:51 PM	ChatGPT	`gpt-5-1`	58	458	190	$0.0031
Mar 7, 07:46 PM	Claude	`claude-sonnet-4-6`	312	2.4K	8.0K	$0.088

Pricing

Start free. No credit card required.

14 days of everything, on us. Then pick the plan that fits.

Monthly

Annual Save 20%

Free Trial

14 days · all features

Everything unlocked, no strings attached

✓ Claude + ChatGPT
✓ Token & cost tracking
✓ Context health monitoring
✓ Project tagging
✓ Dashboard + charts
✓ CSV/JSON export
✓ 18 currencies
✓ Full history

Try Free for 14 Days

If you pay for AI, this is for you.

⌨️

Developers

Track token burn in Claude Code, Cursor, and ChatGPT. Know your real cost per commit. Understand why your AI stops being helpful mid-conversation.

🎨

Creators

Using Midjourney, Runway, DALL-E, Suno? Your $105/month subscription stack hides real economics. See what each tool actually consumes.

👤

Everyone

If you pay for AI, you deserve to see what you're actually consuming. Kontinuity makes the invisible visible — no technical knowledge required.

What's coming next

We're just getting started.

No dates. Just direction. Here's where Kontinuity is headed.

Phase 2 — Coming in Pro

Prompt Onboarding Tool

7-question interview that generates an optimized system prompt for your workflow. Estimated 60% fewer tokens per conversation.

Smart Tips Engine

Contextual suggestions based on your usage patterns. Reduce costs and improve output quality without changing how you work.

Drift Detection

Know exactly when your AI conversation starts going off-track — before it wastes your tokens and time.

Phase 3 — On the Roadmap

Invisible Git Layer

Automatic version control for code copied from AI conversations. Meaningful commit messages generated from conversation context.

GitHub Integration

Connect your GitHub account. Kontinuity creates repos, branches, and commits as you build with AI.

Phase 4 — On the Roadmap

More Platforms

Gemini, Grok, and more. Track AI costs everywhere you work — not just Claude and ChatGPT.

Firefox + Edge

Cross-browser support. Same Kontinuity, more browsers. Wherever you use AI, Kontinuity follows.

Stop guessing.
Start tracking.

14 days free. All features unlocked. No credit card. See what your AI actually costs.